ANTON
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2009-06-29 23:45:00, Á¶È¸ : 179, Ãßõ : 43 |
1. °³¿ä
SONETÀº ¹Ì±¹ÀÇ º§ Åë½Å ¿¬±¸¼Ò(Bellcore, Bell communications research)¿¡ ÀÇÇؼ
Á¦¾ÈµÇ°í, T1 committee(T1 À§¿øȸ)¿¡ ÀÇÇؼ ºÏ¹Ì Ç¥ÁØÀ¸·Î äÅ᤹ßÀüµÈ ±¤Àü¼Û¿ë
"µ¿±â½Ä ´ÙÁßÈ" ¹æ½Ä¿¡ ÀÇÇÑ µðÁöÅнÅÈ£°èÀ§ Ç¥ÁØÀÌ´Ù.
¤· ±âÁ¸ PDHÀÇ DS3 ½ÅÈ£ÀÎ 44.736Mbps¸¦ ¼ö¿ëÇÏ¿© Àü¼ÛÇÒ ¼ö ÀÖ´Â 51.840Mbps(STS-1)
¸¦ ±âº» ¼Óµµ·Î Çϸç, STS-1(51.840Mbps) x n ½ÅÈ£¸¦ ±¸¼ºÇÏ°Ô µÈ´Ù.
2. SONET ¹× SDH
¤· SONETÀº ANSI¿Í ECSA(Exchange Carriers Standards Association)ÀÇ Áö¿øÇÏ¿¡ °³¹ß
µÇ¾úÀ¸¸ç ITU-T¿¡ ÀÇÇØ Ã¤ÅÃµÈ Ç¥ÁØÀÌ´Ù.
¤· ´Ù¸¸, ITU-T¿¡¼´Â SDH(Synchronous Digital Hierarchy)¶ó°í ºÎ¸£¸ç SONET°ú´Â ¾à°£
ÀÇ Â÷ÀÌ°¡ Á¸ÀçÇÑ´Ù.
3. SONET/SDH ½ÅÈ£°èÀ§
ANSI ITU-T Data rate Payload rate
Ç¥±â Ç¥±â (Mbps) (Mbps)
STS-1 STM-0 51.84 50.112
STS-3 STM-1 155.52 150.336
STS-9 466.56 451.008
STS-12 STM-4 622.08 601.344
STS-18 933.12 902.016
STS-24 1244.16 1202.688
STS-36 1866.24 1804.032
STS-48 STM-16 2488.32 2405.376
STS-96 4976.64 4810.176
STS-192 STM-64 9953.28 9620.928
STS-768 STM-256 39813.12
¡è ¡è
¡Ø ÀÌ Ç¥±â¹ýÀÇ ±ÔÄ¢Àº ³¡¼ýÀÚ°¡ ¡Ø »ç¿ëÀÚ°¡ ½ÇÁ¦ ¾òÀ» ¼ö
STM-1 ¼ÓµµÀÇ Á¤¼ö¹è¸¦ ÀÇ¹Ì ÀÖ´Â ¼Óµµ
4. SONETÀÇ ±âº» Àü¼Û ´ÜÀ§ : STS-1
¤· 90Çà x 9¿ (810 ¹ÙÀÌÆ®)ÀÇ 2Â÷¿ø ³í¸®Àû ¹è¿ ±¸Á¶¸¦ °®´Â ÇÁ·¹ÀÓ
¤· Àüü 810 ¹ÙÀÌÆ® Áß 36 ¹ÙÀÌÆ®´Â ¿Ã¹Ù¸¥ Àü¼ÛÀ» À§ÇÑ Á¦¾îÁ¤º¸(¿À¹öÇìµå)
¤· 125 ¥ìs °£°Ý(ÃÊ´ç 8000¹ø, 8Khz)À¸·Î Àü´Þ, µû¶ó¼ 51.84Mbps (8000 x 810 x 8)
* SDH´Â 9Çà*90¿ÀÇ SONET ±¸Á¶¸¦ 3¹è·Î È®´ëÇÑ 9Çà*270¿ÀÇ Á¤¹æÇü ÇÁ·¹ÀÓ ±¸Á¶·Î,
155.520Mbps Àü¼Û¼Óµµ, ÇÁ·¹ÀÓ ¹Ýº¹ÁֱⰡ 125§ÁÀÎ ½ÅÈ£ ÇÁ·¹ÀÓÀ» ±âº» °èÀ§½ÅÈ£¸¦
STM-1(Synchronous Transport Module level-1)À¸·Î ÇÔ
5. SONET Layering
Path Layer / Line Layer / Section Layer / Photonic Layer
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